<div id="alerta" data-role='popup' data-theme="a">
    <div data-role="header" data-theme="a" id="alertaHeader"></div>
    <div role="main" class="ui-content">
        <p id="alertaTexto"></p>
        <a href="#" class="ui-btn" data-rel="back" data-transition="slide"  id="linkAlerta">OK</a>
    </div>
</div>